Lock



A BOGE.

LOCK.

APPLICATION FILED AUG.26, I921.

11,23,553, Patented July 25, 1922.

[ml/senior;

ADOLF EDGE, OF SOLINGEN, GERMANY.

LOCK.

Specification of Letters Patent. Patented July 25, 1922.

Application filed August 26, 1921. Serial No. 495,570.

T 0 all whom it may concern Be it known that I, AnoLr Boon, a citizen of the German Republic. residing at Solingen Rhenish Prussia, Germany, have invented. certain new and useful Improvements in Locks (for which I have filed applications in Germany Dec. 1, .1914, and June 2, 1920; France July 10, 1920; Sweden June 30, 1920, and Switzerland July 17, 1920), of which the following is a specification. r

The subject matter of my co-pending application No. 495,569 is a look provided with a key-bit (therein termed a rotary element) remaining continuously in the main lock and coacting with two cylinder locks mounted one ateach side of the main look, so that by the insertion of the key into either cylinder lock said key-bit becomes coupled with this cylinder lock and can thus be turned to actuate the bolt.

The key-bit has slotted, sleeve-like ends which are engaged by slotted, pin-like extensions on the two rotary cylinders of the side locks, whereby the end of the key can penetrate into the key-bit and drive-the same directly. Whereas for the embodimeant of the invention claimed in this coscribed, may be employed in combination with any other lock than that specifically claimed in the co-pending application.

For example, in the modification herein after described, a key-bit is employed which has the sleeve-like form from end to end, and not merely sleeve-like ends as in the co-pending application, and is provided with an external lug'for actuating the bolt. Where an existing lock is provided with the ke v-bit, this look can be converted into a safety or cylinder lock according to the present invention by connecting to it two cylinder locks substantially in the manner above described.

In the new look, the journalling for the key-bit axle thus completed and strengthenedis preferably not, as usual, in the lock wall, but on the pins of the rotary cylinders which engage the key-bit in the interior of its axle. There is thus obtained not only a good bearing for the key-bit independent ingof the lock walls, but also the further advantage that the key, during the locking movement, is at the same time guided for a considerable part of its length, in the rotary cylinder and key-bit axle, and in that way mechanical stressing ot the key is considerably reduced. Finally this arrangement has the further advantage that the cylinder locks are each inserted into the lock walls by means of a spigot or annular element concentric with their rotary axis and consequently they an be secured against dis placement in accurately concentric positions.

Two embodiments oi the invention are shown by way of example in the accompanying drawing, one being a mortise lock and the other a box-lock. In this draw- F ig. 1 shows the mortise lock embodiment in vertical section,

Figs. 2 and 3 show two views of the appertaining key-bit,

Fig. 4 shows the rim-lock embodiment and Figs. 5 and 6 show the appertaining keybit. I

are the casing walls of the main lock, on both sides of which are arranged cylinder locks'51 and 52 provided in known manner with pin tumblers and fastened by means of a common screw 53. The two rotary cylinders 53, 54: are each provided at their inner ends with a cylindrical extension 55, 56, respectively, whereon the keybit 57 which remains in the lock is journailed by means of its axle 58. This axle is provided with a slit or slot 59 extending longitudinally through it, which slot corresponds to the slots in the two rotary cylinders for receiving the key, so that the key can be inserted through the one, as also the other rotary cylinder, and the inner lock walls 50, passing right through directly into the key-bit. By the insertion of the key the particular rotary cylinder is coupled with the key-bit 57 and, as the drawing shows, the key for a considerable portion of its length is in engagement with the rotary cylinder and the key-bit sleeve, so that mechanical stressing of the key will be small and even when the lock is still in action breakage of the key in the lock need not be contemplated When the key is withdrawn the key-bit is turnable and is then resiliently held in the middle position shown by means of a snap-in ball 61. acted on by a spring 60, so that the slot in the key bit axle and that in either rotary cylinder are located exactly opposite each other and proper insertion oi the key is ensured, without opening or closing from either side of the door being prevented. The cylinder locks 5:2, 51 are provided on their rear sides each with an annular lip or spigot 62, 63, respectively, by means of which they engage in a corresponding hole in the lock wall and are thus secured in exactly concentric positions against displacement.

The rim lock shown in Figs. 4%5 corresponds in all its essential parts with the above described mortise-lock. The corresponding parts are therefore indicated by the same reference letters so that a special description of this embodiment will be unnecessary.

I claim:

1. A safety lock comprising in combination a main lock, a key-bit remaining continuously therein and a cylinder lock mounted on each side of the main lock, the rotary cylinder of each side lock and the key-bit telescoping each other and having longitudinal, registering slots for jointly receiving the key.

2. A safety lock comprising in combination a main look, a key-bit remaining continuously therein and a cylinder lock mounted on each side of the main lock, the rotary cylinder of each side lock and the keybit telescoping each other and having longitudinal registering slots for jointly receiving the key, which slots pass right through the telescoping joint.

3. A safety lock comprising in combination a main look, a key-bit remaining continuously therein and a cylinder lock mounted on each side of the main lock, a rotary cylinder of each side lock and the key-bit telescoping each other and having longitudinal, registering slots for jointly receiving the key, and the key-bit being journalled solely at and by the telescoping joints.

1. A safety lock comprising in combination a main lock, a sleeve-like key-bit remaining continuously therein and a cylinder lock mounted on each side of the main lock, the rotary cylinder of each side lock having a pin-like extension telescopinginto the key-bit. and each rotary cylinder and the key-bit having longitudinal, registering slots for jointly receiving the key. i

5. A safety lock comprising in combination a. main lock, a sleeve-like key-bit remaining continuously therein and a cylinder lock mounted on each side of the main lock, a rotary cylinder of each side lock having a pinlike extension telescoping into the keybit, and each rotary cylinder and-the key-- bit having longitudinal, registering slots for jointly receiving the key, which slots pass right through the telescopmg joint.

6. A safety-lock comprising in combination a main lock, a key-bit remaining continuously therein and a cylinder lock mounted on each side of the main lock, the casing of each side lock having a spigot projection engaging in the casing of the main lock, and. a rotary cylinder of each side lock and the key-bit telescoping each other and having longitudinal, registering slots for jointly receiving the key.

7. A safety lock comprising in combination a main look, a key-bit ren'laii'nng contini'iously therein and a cylinder lock mounted on each side oi? the main lock, the rotary cylinder of each side lock and the keybit telescoping each other and having longitudinal registering slots for jointly receiving the key, and resiliently influenced means for holding the slots in registration.

8. 'A safety lock comprising in combination a main lock, a key-bit remaining continuously therein and. a. cylinder lock mounted on each side of the main lock, the rotary cylinder of each side lock and the key-bit telescoping each other and having longitudinal, registering slots for jointly receiving the key, and a spring-contro1led ball for holding the slots in registration.

9. A safety lock comprising in combina tion amain look, a key-bit remaining continnously therein, a cylinder lock mounted on each side of the main lock, the rotary cylinder of each side lock and the key-bit telescoping each other and having longitudinal, registering slots for jointly receiving the key, the casing of a cylinder lock having a radial hole and thekey-bit a socket below the hole, a compression spring within the radial hole and a ball at the inner end thereof and adapted to engage thesocket in the key-bit when the slots are registered. i

10. A: safety lock comprising in combinationa main lock,'a key-bit remaining continuously therein, a cylinder lock mounted at each side of the main lock, the casing of each side lock having a spigot engaging in the casing of the main lock, and. a screw commonly holding together the mainlock and side locks, the rotary cylinder of each side lock andthe key-bit telescoping each other and. having longitudinal, registering slots for jointly receiving the key.

11. A safety lock comprising in combination a main look, a key-bit remaining continuously therein, and a cylinder lock mounted at each side of the main lock and having a lug on its casing, the casing of each side lock also having a spigot engaging in the casing of the main lock, and a screw comn'ionly holding together themain lock and the lugs on the side locks, the rotary cylinder of each. side lock and the key-bit telescoping ea h Other and having longitudinal,

nal, registering slots for jointly receiving the key, the slot in the key-bit extending outwardly to such a distance that the peripheral portion of the key-bit tube remains entire.

13. A safety lock comprising in combination a main lock, a key-bit of continuous tube form remaining always in the main lock and a cylinder lock mounted at each side of the main lock, the rotary cylinder of each side lock having a pin-like extension tele-,

scoping into the key-bit, and each rotary cylinder and the key-bit having longitudinal, registering slots for jointly receiving the key, the slot in the said pin-like extension extending inwardly therein to leave substantialdistance between its bottom and the periphery of the extension and the slot in the key-bit extending outwardly to such a distance that the peripheral portion of the key-bit tube remains entire.

14. A safety lock comprising in combination a main lock, a key-bit of continuous tube form remaining always in the main lock and a cylinder lock mounted at each side of the main lock, the rotary cylinder of each side lock having a pin-like extension telescoping into the key-bit, and each rotary cylinder and the key-bit having longitudinal, registering slots for jointly receiving the key, which slots pass right through the telescoping joint, the slot in said pin-like extension extending inwardly therein to leave substantial distance between its bottom and the periphery of the extension and the slot in the key-bit extending outwardly to such a distance that the peripheral portion of the key bit tube remains entire.

In testimony whereof, I afiix my signature in the presence of two witnesses.

ADOLF BOGE.

Witnesses:

O'rro FISCHER, CLAIRE WELLER. 

